The '''X-axis''' is the horizontal axis on a coordinate plane, as opposed to the vertical axis, or [[y-axis]]. The point at which a line crosses the x-axis is referred to as the [[x-intercept]]. The [[y-intercept]] is defined as infinity.
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The '''X-axis''' is the [[horizontal]] axis on a [[coordinate plane]], as opposed to the [[vertical]] axis, or [[y-axis]]. The [[point]] at which a [[line]] crosses the x-axis is referred to as the [[x-intercept]]. The [[y-intercept]] is defined as infinity.